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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Text.Json;
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using System.Threading;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.Json;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using Microsoft.Extensions.Logging;
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using SQLitePCL.pretty;
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namespace Emby.Server.Implementations.Data
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{
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/// <summary>
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/// Class SQLiteDisplayPreferencesRepository.
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/// </summary>
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public class SqliteDisplayPreferencesRepository : BaseSqliteRepository, IDisplayPreferencesRepository
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{
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private readonly IFileSystem _fileSystem;
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private readonly JsonSerializerOptions _jsonOptions;
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public SqliteDisplayPreferencesRepository(ILogger<SqliteDisplayPreferencesRepository> logger, IApplicationPaths appPaths, IFileSystem fileSystem)
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: base(logger)
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{
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_fileSystem = fileSystem;
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_jsonOptions = JsonDefaults.GetOptions();
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DbFilePath = Path.Combine(appPaths.DataPath, "displaypreferences.db");
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}
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/// <summary>
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/// Gets the name of the repository.
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/// </summary>
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/// <value>The name.</value>
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public string Name => "SQLite";
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public void Initialize()
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{
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try
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{
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InitializeInternal();
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error loading database file. Will reset and retry.");
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_fileSystem.DeleteFile(DbFilePath);
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InitializeInternal();
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}
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}
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/// <summary>
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/// Opens the connection to the database
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/// </summary>
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/// <returns>Task.</returns>
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private void InitializeInternal()
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{
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string[] queries =
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{
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"create table if not exists userdisplaypreferences (id GUID NOT NULL, userId GUID NOT NULL, client text NOT NULL, data BLOB NOT NULL)",
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"create unique index if not exists userdisplaypreferencesindex on userdisplaypreferences (id, userId, client)"
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};
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using (var connection = GetConnection())
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{
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connection.RunQueries(queries);
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}
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}
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/// <summary>
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/// Save the display preferences associated with an item in the repo
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/// </summary>
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/// <param name="displayPreferences">The display preferences.</param>
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/// <param name="userId">The user id.</param>
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/// <param name="client">The client.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <exception cref="ArgumentNullException">item</exception>
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public void SaveDisplayPreferences(DisplayPreferences displayPreferences, Guid userId, string client, CancellationToken cancellationToken)
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{
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if (displayPreferences == null)
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{
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throw new ArgumentNullException(nameof(displayPreferences));
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}
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if (string.IsNullOrEmpty(displayPreferences.Id))
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{
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throw new ArgumentException("Display preferences has an invalid Id", nameof(displayPreferences));
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}
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cancellationToken.ThrowIfCancellationRequested();
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using (var connection = GetConnection())
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{
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connection.RunInTransaction(
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db => SaveDisplayPreferences(displayPreferences, userId, client, db),
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TransactionMode);
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}
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}
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private void SaveDisplayPreferences(DisplayPreferences displayPreferences, Guid userId, string client, IDatabaseConnection connection)
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{
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var serialized = JsonSerializer.SerializeToUtf8Bytes(displayPreferences, _jsonOptions);
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using (var statement = connection.PrepareStatement("replace into userdisplaypreferences (id, userid, client, data) values (@id, @userId, @client, @data)"))
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{
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statement.TryBind("@id", displayPreferences.Id.ToGuidBlob());
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statement.TryBind("@userId", userId.ToGuidBlob());
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statement.TryBind("@client", client);
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statement.TryBind("@data", serialized);
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statement.MoveNext();
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}
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}
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/// <summary>
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/// Save all display preferences associated with a user in the repo
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/// </summary>
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/// <param name="displayPreferences">The display preferences.</param>
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/// <param name="userId">The user id.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <exception cref="ArgumentNullException">item</exception>
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public void SaveAllDisplayPreferences(IEnumerable<DisplayPreferences> displayPreferences, Guid userId, CancellationToken cancellationToken)
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{
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if (displayPreferences == null)
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{
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throw new ArgumentNullException(nameof(displayPreferences));
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}
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cancellationToken.ThrowIfCancellationRequested();
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using (var connection = GetConnection())
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{
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connection.RunInTransaction(
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db =>
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{
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foreach (var displayPreference in displayPreferences)
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{
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SaveDisplayPreferences(displayPreference, userId, displayPreference.Client, db);
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}
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},
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TransactionMode);
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}
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}
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/// <summary>
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/// Gets the display preferences.
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/// </summary>
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/// <param name="displayPreferencesId">The display preferences id.</param>
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/// <param name="userId">The user id.</param>
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/// <param name="client">The client.</param>
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/// <returns>Task{DisplayPreferences}.</returns>
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/// <exception cref="ArgumentNullException">item</exception>
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public DisplayPreferences GetDisplayPreferences(string displayPreferencesId, Guid userId, string client)
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{
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if (string.IsNullOrEmpty(displayPreferencesId))
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{
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throw new ArgumentNullException(nameof(displayPreferencesId));
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}
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var guidId = displayPreferencesId.GetMD5();
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using (var connection = GetConnection(true))
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{
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using (var statement = connection.PrepareStatement("select data from userdisplaypreferences where id = @id and userId=@userId and client=@client"))
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{
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statement.TryBind("@id", guidId.ToGuidBlob());
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statement.TryBind("@userId", userId.ToGuidBlob());
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statement.TryBind("@client", client);
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foreach (var row in statement.ExecuteQuery())
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{
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return Get(row);
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}
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}
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}
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return new DisplayPreferences
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{
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Id = guidId.ToString("N", CultureInfo.InvariantCulture)
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};
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}
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/// <summary>
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/// Gets all display preferences for the given user.
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/// </summary>
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/// <param name="userId">The user id.</param>
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/// <returns>Task{DisplayPreferences}.</returns>
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/// <exception cref="ArgumentNullException">item</exception>
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public IEnumerable<DisplayPreferences> GetAllDisplayPreferences(Guid userId)
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{
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var list = new List<DisplayPreferences>();
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using (var connection = GetConnection(true))
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using (var statement = connection.PrepareStatement("select data from userdisplaypreferences where userId=@userId"))
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{
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statement.TryBind("@userId", userId.ToGuidBlob());
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foreach (var row in statement.ExecuteQuery())
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{
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list.Add(Get(row));
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}
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}
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return list;
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}
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private DisplayPreferences Get(IReadOnlyList<IResultSetValue> row)
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=> JsonSerializer.Deserialize<DisplayPreferences>(row[0].ToBlob(), _jsonOptions);
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public void SaveDisplayPreferences(DisplayPreferences displayPreferences, string userId, string client, CancellationToken cancellationToken)
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=> SaveDisplayPreferences(displayPreferences, new Guid(userId), client, cancellationToken);
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public DisplayPreferences GetDisplayPreferences(string displayPreferencesId, string userId, string client)
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=> GetDisplayPreferences(displayPreferencesId, new Guid(userId), client);
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}
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}
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